Multiple-spindle drill head



3 Sheets-Sheet 1.

Filed June 9, 1922 [An/Mrap: Grange/isn Awn is. Annyf/c. Mmm

,Pin v F,-

o/Mfrs.

om. r16, 1923.

G. HEY ET AL MULTIPLE SPINDLE DRILL HEAD Filed June Q 1922 5 Sheets-Sheet 2 mwah' wg.

Arm Nera:

Paimaaoaieie. y 'n i a gaga'mg baren s GEORGE HEY, or ST. MARGANErs-oN-r'rnartns, AND JAMES ARMSTRONG fwrLDrNe, or LoNDoN, ENGLAND, ASSIGNoE-s To HARPER DEAN LIMITED, or LONDON, ENGLAND. j. ,f

MULTrPLE-SPINDEE DRILL HEAD.

Application sied-'June 9, 19,22.` serial No. 567,'o92l- To all whom it may concern: Y [Figure 3 is an enlarged detail sectional 55 Be it known that we, GEORGE HEY, ALM.: view'oi a-locking4 device for a drill socket; l. Mech. E., M. I. A. E., and JAMES ARM- Figure -4`is a vertical sectional elevation sTRoNG VILDING, subjects of the King of' taken on bent'line 1let in Figure 5, 5.Great Britain and Ireland, residing' at, ieshowing a modified yform of multiple spectirely, 50 Orchard Road, St. Margaretsspindle drill headwherein members each 60 on-Thames, in the county off Middlesex, carrying an intermediate'gear wheel can be England, and 182 Long Acre, London, Engdetachedfrom and adjusted about the cenland, haveinvented a new and useful Im- `tral support, and, pI-Ovement in Multiple-Spindle Drill Heads, Figure 5` is a;y diagrammatic horizontal oi which the. following is a specification. l section 'taken on the line 5.-,5` in Figure L 65 This invention relates to'multiplegspindle showing in plan the' bearing braeketsfor drill heads for drilling machines of thetype thendrill socket members arranged in vjari-V .of .drill head wherein a supporting member ous positions.'Y i 5 arranged to be attached' to a drilling spin-. .Like reference: numerals designate lilzef die, preferably so as to adjustable vertiparts throughout,theseveral views.; 70V

cally,fcarries a central driving gear wheel Referring irsttoFiguresl to B ,the drill i I and `two or more drill socketV members, ,headcomprises atubularsupporting *meme "which latter areprovidedwith pinionsarv,ber lO arran'gedito be attached'in vthe usual 20 ranged to be driven by the central 'gear manner to the-rack sleeve ll of a drill-ing wheel by means ofvertical intermediate spindle, and hasat its lower-end ahead 12. 75 gear wheels Vwhich `have their axes .'inter- A driving spindle 13 vhaving a tang '14- for mediate kof those'oi` the. said vsupport and of insertion into'the lower end 'of thedrilling the said pinions and are also carried by the s'pin'dle'is r'journalledinthe head l2 by 55supporting member. l means cfa vertical y'plain bearing l5 and a The inventionrhasor yits main object to` horizontal thrust ballbearingy 16. Below 80 provide a drill head ofthe type describedV the head 12al` central driving gearfwheell so constructed and. arranged that its total is vfastonfth'e Vdriving spindle lSthe lower height is reduced to a minimum, solthat' end or" which is formedas socket for. a

drilling machines provided with *the imk(,:entral drill 18, a, thrust ball',bearingy l19 construction.

In said drawings: f

proved drill head are'fstitler and arevr capabeing provided betweehepge'a Wheel 17 S5 ble of taking larger pieces of .work than andthe head l2.V l heretofore when they have been provided The 'supporting member hasiour lower` with multiple spindle drill headsetknown apertures QO'arrang'ed diagonally opposite' 7 j 1 .one another inpairsjonits head andftour Other features of thejinvention will be* upper` apertures 2ten its side vertically 90 described hereinafter. Y i Y abovethe yformer apertures.y Each aperture In order that the invention maybe clearly is bushed,-r land each pair of apertures 20, 21j, f understood, Vtwo embodiments will now be together withtheir bushingsy one above 40 described by way of example with reference other,consti tutes a bearing for'. an interto the accompanyingdrawings It is to be mediategearv wheelQS, 24. v'lhistrgear wheel 95 understood, however, thatftheinvention is comprises two portions of unequal length,

.not limited to the precise constructional dewhereof the lower shorter part '2e meshes f tails'enumerated. with' the eentralgear wheel'r 17, and the 11i upper larger part 23`is situated between two Y F'gurel l is avertical section taken on the apertures 20, 2l. Thetwok parts 23, 2%,"are. 100 bent yline 1 1 in Figure' 2 showingone ofthe same diametenbut a compound gear form of multiple spindle drill head accord` wheelA having parts of different diameter' ing to the invention. i 'maybe used it desired.l 1

FigureI 2 is a diagrammatic horizontal;V .f `s-shownat the left hand of Figurey def .section through the same showing in plan lvn`tachable.bearing brackets 25 are provided, v105 the arrangement of bearing brackets ktor each carrying a drillsocket member26, and drill socket members about their centralv each having lateral lugs ,27, 28,/ arranger supporting member, and g i .L vertically one abovethe other, by'meansxolf -which the brackets can swing each about the vertical axis ot an intermediate gear wheel 23, 24. Each of these brackets 25 is secured in position by a. bolt 29 that extends i'reely through an intermediate gear wheel 23, 24,

jtlie'two apertures 20,21, yand through the.

two bushed'lugs 27, 2S ot the bracket, a nut 3() is provided for clampingVV the bracket in the angular position in :iy'iiniith into which it is adjusted. rlhe upper lng 28 is seated on the upper end of the upper airierture 21 and the lower lug 27 bea-rsagainst the lower This secondbearing bracket 125 is similar to thatjust described but has its lues l27,

- above the upper eye 21.

128 spaced further apart to embrace the lue-s 27, 28 of the first bracket 25 and is secured in position by the samebolt 29. For Vthe sake of Yclearness only 'the lugs27v28 of the' bracket 25 are shown at.` the right hand oi' The length ot the lugs on the Figure i. second bracket 1,25 may differ fromV that of those on the irst,in order that `drill 35 carried by it may be set further away from the centre of the drill head thanrcan drill 37 carried by the irstbracket ,257., whereby a greater degree of adjustabilityis secured as vto points at which holes may be drilled.

The twolower lugsv 27. 127 are threaded onthe head endof the bolt 29 below the lower aperture'20, andthe `two upper lugs 28. 128 are journaled on the nut end of thebolt 29 As shown at the nut end of the right hand boltp29 keach of these pairs of lugs is secured in position by a three-diameter split shouldered sleeve 40, one under the head and the other under the-nut of the bolt. 'These sleeves bear with j shoulders on the outerfaces of the two outside lugs, and with other shoulders on the upper lower Yfaces of the two inside lugs. so that when the nut of the bolt is tightened the two brackets are clamped lirmly one-on the other and on the support. lf the second bracket 125 is not required at anytime itcan 7, be removed by removing` the bolt 29 and its sleeves 40, whereupon the-bolt with' the saine sleeves can be used for securing the one bracket in the required position on the support, orthe alternative arrangement with distance-pieces 34, 35 described above may beemployed.

Each drill socket 'member 25 is journaled in its bracket by a plain vertical bearing 4l vmove endwise through it and a horizontal thrust ball bearing 42, and carries a pinion 43 keyed to it between these bearings. This pinion is of such a size that when the bracket carrying` it' is mounted as described above, it meshes with the upper part 23 of its allotted intermediate gear wheel'. The drill socket member 2G thus extends upwards alongside the drilling spindle, and'coiisequently the total height of the drill head is reduced as compared with known constructions -in which the drill socket members have been driven by the` vlower Aparts of intermediate gear wheels, or

by the part oic an intermediate gear wheel situated below the level of a central driving gear wheel, such as tlie'wheel 17'.. Conseqiiei'itly larger work can be accommodated in the drilling machine. *When two bearing brackets 25, i25 are mounted onthe same vpair of apertures to swing about the axis of an intermediate gear wheel coii'imon to the` two-as just described above, then the piiiions 43 in the two brackets will be at different levels in order to enable the brackets to be swung` close together without the pinions fouling one another.l vAs shown in Figure l the pinion 43 at the right hand side ot the vfigure is at a lower level than the: pinion 43 at the lett hand side.

lFlach drill socket member 26 is adjustable endwise in its bearing bracket 25 or 125.

`For this purpose the upper end-ot the bearvingbracket is split and' constitutes a split sleere 50 y(Figure in whichvis provided a l'iusning` 5l havin?,r at one siderackteeth 52 and the said thrust bearing 42 at its lower end. `The pinion 43 is splined on the socketY member inf-such a mannerl that the latter` can when it is shifted by the toothed bushing 51.y This meshes withan adjListing,r pinion 53 that is carried by a bolt 54 extending; through the two ears of the split sleeve. Thehead' ot this bolt yis;countersunk inl one ear and has pins 5G connecting it forrotation with the adjusting,` pinion 53. A nut 57 is let into the other ear and bears against a washer or 4collar 58 that is coiiedor tapered on the outside and is. preterably split.` This washer vbears against a correspondingly conical seat in the ear lcontainingv the nut. lVhen the vnut 57 is tightened, the washer 58l is Aforced into the 'split sleeve and grips it as well as the bolt, thereby fixing the pinion-53 and boit54 as a rigid member to the bracket .25 and.prerenting,- the toothed bushing 5l from shitting endwise. To adjust the socket member 26verticallyit is only necessary .to slack'en the nut 57, lwhereupon the -bol't 54 can be turned by a key having pins for iiiseition yinto holes provided .tor themv in the end face of the head 55 of the bolt. -A lock nut 59 is provided for detachably sefcuring thetoothed bushingl onthe socket .member 2 6. A. guard 60 suspended by'ts fil) upper edge frointhe supporting ,member l0 may be drill. head. ,Y

Qwing to the drillrsocket 'membersbein'g mounted in the mannerrdescribed above a very rigid construct-ion oitdrill head is lprovided and it is found infpiactice ythat a large iiumberoflarge diameter drills can be used simultaneously without undue bendprovided surrounding the entire the member l0. As shown, two sleeves' 200,'

201 have inwardly directed flanges 202, 203 respectively, fitting the member. 10 with the upper flange 202 bearing against iiange il() on the member 510. Two othersleeves whereof the flanees205.206.y lonl l are shown Y f3 are simularly threaded on the member l0. A nut 204 screwedfon the lowerfend of the `member Ul-above ther level 'of the gear wheel l? securely 4holds allrrthese sleeves rigidly in-"position,` Each of these sleeves has radial. outwardly directed elyesfQO, 2l arranged one above another in pairs for carrying bolts 29. This arrangement enables the intermediategear: wheel 23, 24 carried by any one of the sleeves to ber-eadily adjusted in azimuth in relation to that car-y ried bv theY other Isle'ei'fes,fand also enables all the interinediate gear wheels and the drill Asocketmembers allotted thereto bereadily removed from the-drill head and Abe' re 'il'i by others ofrdilerent` sizegthereby c vertino" he drill head shown-in' Figures l to 3 into a universaldril'lz'head..

bviously, instead -otiour pairsiol' apertures for carrying bearing brackets being provided as described `'above withV reference,

to Figures l to l?, two, .thi-ee orm'oie pairs ma)v be provided, according' to the number of drills required to be; used any time,

whilst each sleeve, such as 200, 201 shown in Figurev t may have one or more pairs thereof. e f y W e claim y l. multiple spindle drill head-oi the type described, comprising a drill head, la cen trai drii-ingr spindle rotatable iii said head,

Y 'i series oit bearingbracket members around d central spindle. an intermediate spindle ociated with each ofsaid bracket memn and forming` the hinge pin about which n u la I;

ers said bearing brackets may be adjusted with relation to said central spindle, a gear wheelr towards the lower end ot saidrce. spindle, gearwheels on said interme spindles gearing towards theirlower ends ced ate"

with,` the` gear wheelfon the spindle, i

'drill ysocket members rotatable in saidbear# ing "brackets, and gear wheels on said socket inembeljsv gearing' with the gear wheels on the intermediate Aspindleassociated therewith to' *Y rds .thelup'perendthereof, for the purposes setforth, n e

2. Amultiple spindle 'drill head of the type described, comprising a tubular lsupporting member, a driving spindle-rotatably mounted in said supporting member, ya gear wheel on 'saidl spindle, a pluralityr of pairs of apertures disposed laterally around said supporting member, a plurality Vof bearing bracket members provided each with a pair of lateral lugs, a bolt passing rthrough each pair of apertures on the supporting memberjandthe lugs on kone ofthe bearing brackets and constituting an axle about which the bearing bracket is adjusted, afgear ,Wheel ony each of said axles,

emes/hing at its lower end with the gear wheel konthe driving spindle,fdrill socketv members` mounted in each of said brackets and;

gear wheels keyedC to said socket membersv and gearing with the upper `portionof the gear wheel onA the aXle `associatedthere-V with, torthe paurposes set fortln e 3. Afmultiple spindlerdrillhead'of the type described, 4comprising a tubular sup-y porting member, a series of sleeve likemein! bers,'langesoii. said members adapted to `be j'ournaledonto said supporting member,

means for securing said sleeve like members in position, apertureson each of said sleeve 100 like members, a bearing bracket associated A 1 with reach of. said sleeve members, lugs on fetich of said bearing bracketsan aXle passing through the apertures of each'iolV said sleeve vmembers and the lugs on the ybracket associated therewith, drill socket members in each of said brackets,` gear wheels on Vsaid socket membersa ygear wheel on each; of said' axles meshing towards its upper lend with the gear rwheel on the drill socket member yassociated therewith, a central' driv-y f ing spindle rotatable in, said supporting member, and 'al gear wheel on said driving spindle gearing Vwith each of said gear'k Y* Vwheels on said axles, for' the purposes setV fort-h.

4. A maiapie spindief drin head or the v type described, `comprising aV central driving spindle mounted rotatably in a tubular supporting member, a gear Wheel on said spindle, a series of drilling elements ar iso ranged in pairs round' ysaid central; drivingV` spindle, each pair of drilling'elements coinprising two independent bearing bracketsy adjustable, in azimuth with relation tothe centralrdriving spindle, "each of said brackets having spaced super-imposed lugs there- 0n C10-'operating with spaced super-imposed apertures on the supporting ymember to receive on intermediate' axle, a gear Wheel oir said axle, in driving engagement at its lower end with the gear wheel on the Vcentral spindle, a drill socket member mounted rotatably in each of said brackets and a gear wheel on each of said socket members'ar'- ranged at different-relative heights and each meshing with the gear wheel `on the intermediatevaxle in the neighbourhood ot its upper end, for the purposes set forth.

5. A multiple spindle drill head ot the type described, comprisingY a central driving spindle mounted rotatably in a tubular supportingV member` a gear wheel on'said spindlea series ot drilling elements arranged in pairs around said central driving spindle, each pair ot drillingelements comprising two independent bearing brackets adjustable in azimuth with relation to the central driving spindle, each ot said brackets having spaced super-imposed lugs thereon (zo-operating with spaced super-imposedk eyes on the supporting member to receive,

an intermediate axle, gear wheel on said axle, in driving engagementr at its lowerend with the gear wheel on the centralspindle, aV drill socket member mounted rotatably, in each of said brackets, gear wheels on cach `ot said socketmembers arranged at different elative heights with respect to the .gear wheel on the centralspindle and each meshing' with the gear wheel 'on the intermediate axle associated therewith towards its upper end, and means for connecting each socket member to the `gear wheel associated therewith to enable the same to slide therethrough without alteration ofthe plane of rotation oit said p gear wheel, tor the purposes sety forth.

6.. A multiple spindle drill head ofthe Vtype described, comprising a centralA driving spindle mounted rotatably in atubular supporting member, a gear wheel on said spindle, a series ot drilling elements arranged in pairs around said central driving spindle,

each pair of drilling elements comprising two independent bearing brackets adjustable inazimuth with relation to the central driving spindle, each of said brackets having Anavegar spaced super-imposed lugs thereon co-operating with spaced super-imposed apertures on the supporting member tol receive an 1ntermediate axle, a gear wheel on `said'axle in driving engagement at its lower end with the gear wheelon the central spindle, a drill socket member Amounted rotatably ineach ot `for locking said adjusting means.

T; A multiple. spindle drill head ot the type described, comprising a central driving spindle mounted rotatably in a tubular supporting member. a gear wheel on said spin- Ydle'a series of rdrilling` elements arranged in pairs around saidcentral driving spindle, each pair ot drilling elementsr comprising two independent bearing brackets adjustable'in azimuth with relation to the ccntral driving spindle, each of saidv brackets havingspaced super-imposed lugs thereon (to-operating with spaced super-imposed yapertures on the supporting member to recei've'an intermediate axle, a gear wheel on saidaxle in driving engagement at its lower end with the-gear wheel on the central spindle, a drill socket member mounted rotatably i in each of said brackets, a bearing. bushing for each of said drill socket members, a `gear wheel ou each ot said rsocket members arranged tofrotate in a different parallel plane, and each meshing'with the gear wheel on the intermediate axle associated therewith towards its upper end, a rackon each ot said bushings, a pinion meshing with said rack and adapted to adjust. the drillsocket member and bushing-axiallyr within said bearing bracket, and means for locking said pinion and bush in anyadjusted axial position, for

the purposes set forth. Y GEORGE HEY. i JAMES ARMSTRONG WILDING.

ksaid brackets, fa gear wheel on each of said Y socket members arranged to rotate in dilier- 

